On-site testing device for adhesive force of anti-corrosion and fireproof coating of steel member

Abstract

The utility model discloses a steel member anticorrosion fireproof coating adhesive force field test device, which comprises a test vehicle, a base, a force measurement assembly, a clamping machine tool and a monitoring platform, the force measurement assembly comprises a force sensor, an electric telescopic column and a test column, the top end of the electric telescopic column is arranged in an internal thread screw hole of the base, and the top end of the electric telescopic column is connected with the clamping machine tool. The electric telescopic column and the test column are connected through the second internal thread screw hole and the external thread bolt; the clamping machine tool comprises hexagon nuts, bolts and electromagnets, the bolts are arranged on the two sides of the bottom of the base, and the upper ends of the bolts penetrate through the through holes and are fixedly arranged on the base through the hexagon nuts; electromagnets are mounted at the lower ends of the bolts. According to the utility model, the defect that the existing pull-off method adhesive force testing device cannot be applied to an engineering site can be well overcome, the influence of human factors caused by manual circle drawing cutting is eliminated, and the problem of compatibility between an adhesive and a coating does not need to be considered.

Description

Technical Field

[0001] This utility model belongs to the technical field of building material anti-corrosion and fireproof coating testing equipment, specifically relating to a field testing device for the adhesion of anti-corrosion and fireproof coatings on steel components. Background Technology

[0002] Concrete and steel structures are commonly used structural forms in building construction. Compared to concrete structures, steel structures have advantages such as high strength, light weight, good seismic performance, quick installation, short construction period, and environmental friendliness. However, steel structures have disadvantages such as poor resistance to high temperatures and susceptibility to corrosion. When the temperature exceeds 430℃, the strength of steel decreases rapidly and significant deformation occurs, which may lead to damage or collapse of the steel structure. Furthermore, steel is prone to corrosion, especially in humid or corrosive environments. Metal corrosion leads to degradation, volume loss, and the formation of microcracks in the steel structure, resulting in brittle fracture and unstable failure. To protect steel, fire-retardant and anti-corrosion coatings are typically applied to the steel surface. Adhesion is a crucial indicator when applying these coatings. Only when the coating adheres firmly to the substrate can it fulfill its protective and decorative functions and maintain a long service life.

[0003] When evaluating coating adhesion, the cross-cut adhesion test and the pull-off test are commonly used. The cross-cut adhesion test assesses the adhesion between the coating and the substrate by making transverse and longitudinal cuts on the coating surface and then quickly peeling it off with adhesive tape. A qualitative rating, such as 0 (no adhesion) to 5 (very good adhesion), is given based on the number of cuts peeled off. However, this method only provides a qualitative assessment and cannot give a precise adhesion value. The pull-off adhesion test is a quantitative method for assessing the adhesion between different coatings and between a coating and a substrate: First, an adhesive is used to attach a test post to the surface of the coating to be tested and it is cured. Then, a cutter is used to cut along the outer perimeter of the test post, cutting through the adhesive and coating until reaching the substrate. Finally, the test post and substrate are fixed on a tensile testing machine for pull-off testing, and the pull force required for adhesion between different coatings and between a coating and a substrate is measured. This method provides a more accurate adhesion value, thus allowing for a quantitative assessment of coating quality. However, in practice, it requires manual cutting with a knife close to the outer perimeter of the test column to cut through the adhesive and coating on the outside of the test column vertically to the surface of the substrate. This is difficult to operate, the cutting quality cannot be guaranteed, and the test results are inconsistent and incomparable.

[0004] Chinese patent CN21848138U discloses a "pull-off adhesion testing device," in which an annular cutter fitted around the outer circumference of a test column requires an operator to hold the cutter handle and push it forcefully along the direction of the test column to cut the paint film. This method greatly improves the operability of conventional manual circular cutting. However, this method is still manual, and it is difficult to control the depth of the cut during operation, making it difficult to ensure that the paint film is completely cut. Moreover, during the pushing operation of the cutter, uneven force cannot ensure that the cutter does not touch or squeeze the test column, thus disturbing and damaging the test column and the paint film at its end. Furthermore, this technology is only applicable to indoor testing; its application to on-site engineering testing greatly increases the operational difficulty, failing to achieve the goal of widespread application in actual engineering field evaluation.

[0005] In summary, the current pull-off adhesion testing technology and equipment are labor-intensive, time-consuming, and difficult to operate, making them unsuitable for on-site engineering testing. Therefore, there is an urgent need to improve them. Utility Model Content

[0006] To address the aforementioned technical problems in the existing technology, this utility model provides a field testing device for the adhesion of anti-corrosion and fireproof coatings on steel components. This device solves the problem that the existing pull-out method testing technology cannot be applied to engineering sites, and also solves the problems of low testing efficiency, inability to display test results in real time, and inability to automatically record and save test data.

[0007] The technical solution adopted in this utility model is:

[0008] A field testing device for the adhesion of anti-corrosion and fireproof coatings on steel components, characterized in that it includes a test vehicle (1), a base (2), a force measuring component (3), a clamping device (4), and a monitoring platform (5), wherein the clamping device (4) is provided on both sides of the bottom of the base (2); wherein:

[0009] A hydraulic lifting column (11) is vertically installed on the top of the test vehicle (1). The lower end of the hydraulic lifting column (11) is fixed to the top of the test vehicle (1). The upper end of the hydraulic lifting column (11) is movably connected to a first hydraulic telescopic rod (12). The end of the first hydraulic telescopic rod is movably connected to a second hydraulic telescopic rod. The end of the second hydraulic telescopic rod is provided with the base (2). An electric telescopic rod (13) is hinged between the hydraulic lifting column (11) and the first hydraulic telescopic rod (12) and between the first hydraulic telescopic rod (12) and the second hydraulic telescopic rod.

[0010] The top of the base (2) is movably connected to the end of the second hydraulic telescopic rod, and a first internal threaded hole (21) is provided at the center of the bottom; through holes (22) are respectively opened on both sides of the bottom of the base (2);

[0011] The force measuring component (3) includes a force sensor (31), an electric telescopic column (32), and a test column (34). The top end of the electric telescopic column (32) is located in the first internal threaded hole (21), and the bottom end of the electric telescopic column (32) is provided with an inwardly recessed second internal threaded hole (33). The top end of the test column (34) is provided with an upwardly protruding external threaded bolt (35) that cooperates with the second internal threaded hole (33). The electric telescopic column (32) and the test column (34) are connected through the second internal threaded hole (33) and the external threaded bolt (35).

[0012] The clamping device (4) includes a hexagonal nut (41), a bolt (42), and an electromagnet (43). The bolt (42) is provided on both sides of the bottom of the base (2). The upper end of the bolt (42) passes through the through hole (22) and is fixed to the base (2) by the hexagonal nut (41). The electromagnet (43) is installed on the lower end of the bolt (42).

[0013] The monitoring platform (5) is electrically connected to the test vehicle (1), the hydraulic lifting column (11), the first hydraulic telescopic rod (12), the second hydraulic telescopic rod, the electric telescopic rod (13), the force measuring component (3), and the electromagnet (43).

[0014] Furthermore, the force measuring component (3) also includes a motor (36), a cutting blade (37), and a vacuum suction cup (38). The cutting blade (37) is arranged in a ring on the outer wall of the test column (34). The motor (36) is installed at the upper end of the cutting blade (37). The motor (36) is fixed on the outer wall of the test column (34), and the driving end of the motor (36) is connected to the cutting blade (37) to drive the cutting blade (37) to move up and down. The vacuum suction cup (38) is located at the bottom of the test column (34).

[0015] Furthermore, a camera (23) is provided on the inner side of the through hole (22) near the through hole.

[0016] Furthermore, a force sensor (31) is provided on the electric telescopic column (32).

[0017] Furthermore, the lower end of the cutting blade (37) has a bevel, which is higher on the top and lower on the bottom.

[0018] Furthermore, the monitoring platform (5) includes a display screen (51), a timer (52), and control buttons (53). The control buttons (53) are used to control the movement of the test vehicle (1), the lifting and lowering of the hydraulic lifting column (11) and the hydraulic telescopic rod (12), the extension and retraction of the steering electric telescopic rod (13), the power on and off of the electromagnet (43), and the testing operation of the force measuring component (3). The display screen (51) is used to display the installation operation and test results of the test equipment in real time.

[0019] Furthermore, the test vehicle (1) is equipped with an oil tank and a drive motor inside. The drive motor drives the piston in the pump body to generate liquid pressure, thereby drawing oil from the oil tank and pushing it into the hydraulic lifting column (11) and the hydraulic telescopic rod (12), thereby realizing the lifting function.

[0020] Furthermore, the hydraulic lifting column (11) and the first hydraulic telescopic rod (12) are connected by ball joints (14), as are the first hydraulic telescopic rod (12) and the second hydraulic telescopic rod (121); the top of the base (2) and the end of the second hydraulic telescopic rod are connected by universal ball joints (15).

[0021] Furthermore, the base (2) and the test column (34) are both made of non-metallic materials such as plexiglass or plastic; the vacuum suction cup (38) is made of silicone rubber, polyurethane or nitrile rubber.

[0022] Furthermore, a magnetic shielding cylinder is provided around the electromagnet (43) to eliminate the influence of the magnetic field generated by the electromagnet on the force measuring component (3). When the electromagnet (43) is energized, it generates magnetism, thereby attracting and fixing the testing device to the surface of the component under test (6). When the power is cut off, it loses magnetism, thereby detaching the testing device from the component under test (6).

[0023] Furthermore, the monitoring platform (5) is connected to a microcomputer, and the testing personnel (7) control the hydraulic lifting column (11) to rise and fall, and the hydraulic telescopic rod (12) to move up, down, forward, backward and left and right in the direction of control button (53).

[0024] Compared with the prior art, the beneficial effects of this utility model are reflected in:

[0025] 1. The testing device of this utility model has a simple structure, high sensitivity, convenient operation, and high degree of automation.

[0026] 2. This utility model can effectively make up for the shortcomings of existing pull-off adhesion testing equipment. It eliminates the need for manual circular cutting and precisely controls the cutting angle, cutting pressure, and cutting depth between the tool and the coating surface, reducing the influence of human factors and effectively improving the reliability of the coating adhesion test structure for steel components.

[0027] 3. By setting up a vacuum suction cup, this utility model eliminates the need to apply adhesive to the coating of the component under test and eliminates the need to consider the compatibility between the adhesive and the coating.

[0028] 4. This utility model can precisely control the tensile force and automatically record and display the test results in real time, making the adhesion test method of the pull-off method more objective and accurate.

[0029] 5. This utility model device is suitable for testing steel structure coatings at any location on site, and has a wide range of applications. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model.

[0031] Figure 2a This is a front view of the base of this utility model.

[0032] Figure 2b This is a top view of the base of this utility model.

[0033] Figure 3a This is a front view of the force measuring component of this utility model.

[0034] Figure 3b This is a top view of the force measuring component of this utility model.

[0035] Figure 4a This is a front view of the clamping device of this utility model.

[0036] Figure 4b This is a top view of the clamping device of this utility model.

[0037] Figure 5a and Figure 5b These are schematic diagrams of the test column structure of this utility model. Figure 1 The front view and top view.

[0038] Figure 6a and Figure 6b These are the front view and top view of the test column structure schematic diagram 2 of this utility model.

[0039] Figure 7 This is a schematic diagram of the monitoring platform structure of this utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Test vehicle; 11. Hydraulic lifting column; 12. First hydraulic telescopic rod; 12. Second hydraulic telescopic rod; 13. Electric telescopic rod; 14. Ball joint; 15. Universal joint; 2. Base; 21. First internal threaded screw hole; 22. Through hole; 23. Camera; 3. Force measuring component; 31. Force sensor; 32. Electric telescopic column; 33. Second internal threaded screw hole; 34. Test column; 35. External threaded bolt; 36. Motor; 37. Cutting blade; 38. Vacuum suction cup; 4. Clamping tool; 41. Hex nut; 42. Bolt; 43. Electromagnet; 5. Monitoring platform; 51. Display screen; 52. Timer; 53. Control button; 6. Component under test; 7. Testing personnel. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0043] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] refer to Figures 1 to 7 This utility model discloses an on-site testing device for the adhesion of anti-corrosion and fireproof coatings on steel components, comprising a testing vehicle 1, a base 2, a force measuring component 3, a clamping device 4, and a monitoring platform 5. The clamping device 4 is provided on both sides of the bottom of the base 2.

[0046] A hydraulic lifting column 11 is vertically installed on the top of the test vehicle 1. The lower end of the hydraulic lifting column 11 is fixed to the top of the test vehicle 1. The upper end of the hydraulic lifting column 11 is movably connected to a first hydraulic telescopic rod 12. The end of the first hydraulic telescopic rod is movably connected to a second hydraulic telescopic rod. The end of the second hydraulic telescopic rod is provided with the base 2. An electric telescopic rod 13 is hinged between the hydraulic lifting column 11 and the first hydraulic telescopic rod 12, and between the first hydraulic telescopic rod 12 and the second hydraulic telescopic rod.

[0047] The top of the base 2 is movably connected to the end of the second hydraulic telescopic rod, and a first internal threaded hole 21 with an inward recess is provided at the center of the bottom; through holes 22 are respectively opened on both sides of the bottom of the base 2.

[0048] The force measuring component 3 includes a force sensor 31, an electric telescopic column 32, and a test column 34. The top end of the electric telescopic column 32 is disposed in the first internal threaded screw hole 21, and the bottom end of the electric telescopic column 32 is provided with an inwardly recessed second internal threaded screw hole 33. The top end of the test column 34 is provided with an upwardly protruding external threaded bolt 35 that cooperates with the second internal threaded screw hole 33. The electric telescopic column 32 and the test column 34 are connected through the second internal threaded screw hole 33 and the external threaded bolt 35.

[0049] The clamping device 4 includes a hexagonal nut 41, a bolt 42, and an electromagnet 43. The bolt 42 is provided on both sides of the bottom of the base 2. The upper end of the bolt 42 passes through the through hole 22 and is fixed to the base 2 by the hexagonal nut 41. The electromagnet 43 is installed at the lower end of the bolt 42. When the electromagnet 43 is energized and generates magnetism, the clamping device 4 and the base 2 can be attracted and fixed to the component 6 to be tested.

[0050] The monitoring platform 5 is electrically connected to the test vehicle 1, the hydraulic lifting column 11, the first hydraulic telescopic rod 12, the second hydraulic telescopic rod, the electric telescopic rod 13, the force measuring component 3, and the electromagnet 43.

[0051] In one embodiment, the force measuring component 3 further includes a motor 36, a cutting blade 37, and a vacuum suction cup 38. The cutting blade 37 is arranged in a ring on the outer wall of the test column 34. The motor 36 is mounted on the upper end of the cutting blade 37. The motor 36 is fixed on the outer wall of the test column 34, and the driving end of the motor 36 is connected to the cutting blade 37 to drive the cutting blade 37 to move up and down. The vacuum suction cup 38 is disposed at the bottom of the test column 34.

[0052] Specifically, the starter motor 36 drives the cutting blade 37 to cut the coating on the surface of the component 6 to be tested to a specified depth. The electric telescopic column 32 is activated to pull the vacuum suction cup 38 at a uniform speed, and the magnitude and duration of the force sensor 31 are recorded in real time. After the test is completed, the power supply to the electromagnet 43 is cut off, and the test device is moved to the next component to be tested to continue the test.

[0053] In one embodiment, a camera 23 is disposed on the inner side of the through hole 22 near the through hole.

[0054] In one embodiment, a force sensor 31 is provided on the electrically operated telescopic column 32.

[0055] In one embodiment, the lower end of the cutting blade 37 has a bevel, with the bevel being higher on top and lower on the bottom.

[0056] In one embodiment, the monitoring platform 5 includes a display screen 51, a timer 52, and control buttons 53. The control buttons 53 are used to control the movement of the test vehicle 1, the raising and lowering of the hydraulic lifting column 11 and the hydraulic telescopic rod 12, the extension and retraction of the steering electric telescopic rod 13, the on / off switching of the electromagnet 43, and the testing operation of the force measuring component 3. The display screen 51 is used to display the installation operation and test results of the test equipment in real time.

[0057] In one embodiment, the test vehicle 1 is equipped with an oil tank and a drive motor. The drive motor drives the piston in the pump body to generate liquid pressure, thereby drawing oil from the oil tank and pushing it into the hydraulic lifting column 11 and the hydraulic telescopic rod 12, thereby realizing the lifting function.

[0058] In one embodiment, the hydraulic lifting column 11 and the first hydraulic telescopic rod 12, as well as the first hydraulic telescopic rod 12 and the second hydraulic telescopic rod 121, are connected by ball joints 14; the top of the base 2 and the end of the second hydraulic telescopic rod are connected by universal ball joints 15.

[0059] Specifically, the base 2 is adjusted to be parallel to the surface of the component 6 to be tested by rotating the universal hinge 15. The rotation angle of the universal hinge 15 is determined by the orientation of the component 6 to be tested at the construction site.

[0060] In one embodiment, the base 2 and the test column 34 are both made of non-metallic materials such as plexiglass or plastic; the vacuum suction cup 38 is made of silicone rubber, polyurethane or nitrile rubber.

[0061] In one embodiment, a magnetic shielding cylinder is provided around the electromagnet 43 to eliminate the influence of the magnetic field generated by the electromagnet on the force measuring component 3. When the electromagnet 43 is energized, it generates magnetism, thereby attracting and fixing the testing device to the surface of the component under test 6. When the power is cut off, it loses its magnetism, thereby detaching the testing device from the component under test 6.

[0062] In one embodiment, the monitoring platform 5 is connected to a microcomputer, and the testing personnel 7 control the hydraulic lifting column 11 to rise and fall, and the hydraulic telescopic rod 12 to move in the up, down, forward, backward and left and right directions via control button 53.

[0063] In one embodiment, the bottom of the test column 34 is a flat-bottomed cylindrical component. Figure 5a and 5b (As shown).

[0064] In one embodiment, the bottom of the test column 34 is a cylindrical test column with an arc-shaped curved surface. Figure 6a and 6b As shown in the figure, the curvature of the arc surface of the test column is consistent with the curvature of the steel component 6 to be tested.

[0065] The working steps of this utility model are as follows: Select a flat or curved test column 34 suitable for the surface shape of the test point of the component 6 to be tested; after the top of the force measuring component 3 is fixedly assembled into the first internal threaded screw hole 21 below the base 2, the test column 34 is assembled onto the force measuring component 3 through the external threaded bolt 35, so that the force measuring component 3, the base 2 and the test column 34 are mechanically connected into a whole through the reserved first internal threaded screw holes 21 and 33; the testing personnel 7 sends an instruction through the control button 53 on the monitoring platform 5 to move the test vehicle 1 to the test point of the component 6 to be tested; the clamping device 4 is a component for fixing the test device, the purpose of which is to attract and fix the test device to the surface of the component 6 to be tested after the electromagnet 43 is energized and generates magnetism; the force measuring component 3 is the main carrier for testing the adhesion of anti-corrosion and fireproof coatings; the monitoring platform 5 is configured to control the movement of the test vehicle 1 and the lifting and turning of the test device, while continuously applying a pull-out force at a constant speed, automatically recording the pull-out load and loading time, displaying the test results in real time, and realizing automated monitoring.

[0066] This invention features a simple structure and convenient operation. A motor 36 drives the cutting blade 37 to cut coatings at different depths, avoiding the irregularities and inconsistent cutting depths associated with manual circular cutting, thus improving the cutting precision and indirectly enhancing the accuracy of test results. A vacuum suction cup 38 firmly adheres the force-measuring component 3 to the coating surface of the component 6 under test, eliminating the need for adhesive application and resolving compatibility issues between adhesives and different coatings. This invention effectively overcomes the limitation of existing coating adhesion testing methods to indoor testing, reducing operator workload and operational difficulty, and improving work efficiency and automation. It boasts advantages such as simple operation, automatic recording and display of test results, high automation, and adaptability to any environment, requiring no specific conditions for the testing site and applicable to any type of coating test.

[0067] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the adhesion of a corrosion and fire protection coating on a steel member in situ, characterised in that, Including test car (1), base (2), force measuring assembly (3), clamping tool (4) and monitoring platform (5), both sides of the bottom of the base (2) are provided with the clamping tool (4);Among them: The top of the test car (1) is vertically installed with a hydraulic lifting column (11), the lower end of the hydraulic lifting column (11) is fixedly arranged on the top of the test car (1), the upper end of the hydraulic lifting column (11) is movably connected with a first hydraulic telescopic rod (12), the tail end of the first hydraulic telescopic rod is movably connected with a second hydraulic telescopic rod, and the tail end of the second hydraulic telescopic rod is provided with the base (2);The hydraulic lifting column (11) and the first hydraulic telescopic rod (12) and the second hydraulic telescopic rod are respectively hinged with an electric telescopic rod (13); The top of the base (2) is movably connected with the tail end of the second hydraulic telescopic rod, and a first internally threaded hole (21) is arranged at the bottom center position;Both sides of the bottom of the base (2) are respectively provided with a through hole (22); The force measuring assembly (3) comprises a force sensor (31), an electric telescopic column (32) and a test column (34), the top end of the electric telescopic column (32) is arranged in the first internally threaded hole (21), the bottom end of the electric telescopic column (32) is provided with a second internally threaded hole (33) recessed inward, the top end of the test column (34) is provided with an externally threaded bolt (35) protruding upward and matched with the second internally threaded hole (33), and the electric telescopic column (32) and the test column (34) are connected through the second internally threaded hole (33) and the externally threaded bolt (35); The clamping tool (4) comprises a hexagon nut (41), a bolt (42) and an electromagnet (43), both sides of the bottom of the base (2) are provided with the bolt (42), the upper end of the bolt (42) passes through the through hole (22) and is fixedly arranged on the base (2) through the hexagon nut (41);The lower end of the bolt (42) is provided with the electromagnet (43); The monitoring platform (5) is respectively electrically connected with the test car (1), the hydraulic lifting column (11), the first hydraulic telescopic rod (12), the second hydraulic telescopic rod, the electric telescopic rod (13), the force measuring assembly (3) and the electromagnet (43).

2. A device for testing the adhesion of a corrosion and fire protection coating on a steel member in situ according to claim 1, characterised in that The force measuring assembly (3) further comprises a motor (36), a cutting blade (37) and a vacuum chuck (38), the cutting blade (37) is annularly arranged on the outer wall of the test column (34), the upper end of the cutting blade (37) is provided with the motor (36), the motor (36) is fixedly arranged on the outer wall of the test column (34), and the driving end of the motor (36) is connected with the cutting blade (37), so as to drive the cutting blade (37) to move up and down;The vacuum chuck (38) is arranged at the bottom of the test column (34).

3. A device for testing the adhesion of a corrosion and fire resistant coating on a steel member in situ according to claim 1, wherein The inside of the through hole (22) is provided with a camera (23) near the through hole position.

4. A device for testing the adhesion of a corrosion and fire resistant coating on a steel member in situ according to claim 1, wherein The electric telescopic column (32) is provided with a force sensor (31).

5. A device for testing the adhesion of a corrosion and fire resistant coating on a steel member in situ according to claim 2, wherein The lower end of the cutting blade (37) has an inclined surface, which is high at the top and low at the bottom.

6. A device for testing the adhesion of a fireproof and corrosionproof coating on a steel member in situ according to claim 1, characterized in that The monitoring platform (5) comprises a display screen (51), a timer (52) and control buttons (53) for controlling the walking of the test vehicle (1), the lifting of the hydraulic lifting column (11) and the hydraulic telescopic rod (12), the telescopic of the steering electric telescopic rod (13), the on-off of the electromagnet (43) and the test operation of the force measuring assembly (3).

7. A device for testing the adhesion of a fireproof and corrosionproof coating on a steel member in situ according to claim 1, characterized in that The test vehicle (1) is internally provided with an oil tank and a driving motor, which drives the piston in the pump body to generate liquid pressure, thereby pumping oil from the oil tank to the hydraulic lifting column (11) and the hydraulic telescopic rod (12), thereby realizing the lifting function.

8. A device for testing the adhesion of a fireproof and corrosionproof coating on a steel member in situ according to claim 1, characterized in that, The hydraulic lifting column (11) and the first hydraulic telescopic rod (12) are connected through a ball hinge (14), and the first hydraulic telescopic rod (12) and the second hydraulic telescopic rod (121) are connected through a ball hinge (14); the top of the base (2) and the end of the second hydraulic telescopic rod are connected through a universal ball hinge (15).

9. A device for testing the adhesion of a fireproof and corrosionproof coating on a steel member in situ according to claim 2, characterized in that, The base (2) and the test column (34) are made of organic glass or plastic; the vacuum chuck (38) is made of silicone rubber, polyurethane or butyronitrile rubber material.

10. A device for testing the adhesion of a corrosion and fire resistant coating on a steel member in situ according to claim 1, wherein The electromagnet (43) is provided with a magnetic shielding cylinder around it to eliminate the influence of the magnetic field generated by the electromagnet on the force measuring assembly (3).

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